GRX 600 groupset, any chance to find now?

Hmm, you might have to piece it together with 800 or get creative. I'm sure Shimano will get them back in stock, eventually...

I started a build last July specced with 800. By October I was using the 800 cranks and derailleur, paired with 600 levers and brakes. I am perfectly happy with the 600 components and would have happily used the cranks too, but when I first started only 800 was "in stock". Which was true except for the right lever was only available in 600. But no 600 lefts available lol. So eventually it all came together but it was actually 4 months getting it all put together.

I have heard Shimano is out until 2022 right now, what that means I don't know and I can't say I have any proof of that. I take it as, the industry is swamped and when stuff gets in, it gets in. Shops get stuff as they can, pull favors from reps or other shops, dismantle bikes, whatever they can to get us up and running. So I guess I would ask your LBS to see what they think first, they might have a lead, then scour online yourself and if you find something let your LBS know just so they aren't planning to get something for you if you already found it.

Wish you luck! I am sure it will work out, patience will be your friend though.

Do you know anyone in Europe?  Shops there may have stock but Shimano won't let them ship directly to the USA.

There is still some availability of grey market stuff on ebay and aliexpress, although it looks like the 2x cranks are getting even harder to find now.

I would probably caution against aliexpress based on recent orders of a few single Shimano parts that were never sent (your money could be tied up for many months waiting for protection to expire and dispute resolution).

As Sherwin24 said, the likelihood of a complete group set is a long way off.  Piecing one together is probably the fastest option.  Also, keep in mind that all Shimano GRX 800-level components and 11-speed GRX 600-level components are compatible with current DURA-ACE, ULTEGRA, and 105 road groups.  The only hic-cup is the GRX cranks have a 2.5mm offset which requires you to use a GRX front derailleur.  I'm running Easton cranks with an Ultegra front derailleur, but everything else is 800 GRX.  

I recently came across this same issue finding a full GRX groupset in Canada and globally for that matter. I took things to the extreme and found it on AliExpress. I bit the bullet and the risks involved and found a seller that has had a store open for longer than 5 years with all high rankings.

The 1x groupset (RX800) came out cheaper than the RX600 I was quoted by the LBS. To my surprise and relief, the parts were delivered by FedEx after only 10 days of gut wrenching fears on being fooled. To my surprise, the left lever came with the dropper post option. 

If you do go this route, a few notable things missing would be original boxes, shift cable housing and quick link for the chain. In general, those were easy to come by. 
I did source the subbrake levers locally and they seem to be available everywhere. 

Best of luck.

Edit: RX600 groupo starting to show up on aliexpress recently, about $875-1000CAD. Frankly for $1300CAD for RX810...why not? 

I have a new GRX 2x 172.5mm crankset with 46 - 30 chainrings I would sell. If that’s what you are interested in. I purchased it not realizing that it was for a 68 mm bottom bracket shell. The breeze radar I wanted to install it on, has a 73 mm bottom bracket shell. It’s the RX600 10spd version. $125+shipping takes it.

If you are open to a non-conventional option, you could consider the 10 speed RS-405 levers and brakes (Tiagra), at a very good price from RandomBikeParts dot com currently.  Very cheap entry into a good Shimano hydraulic brake/lever set.  These are functionally the same as the 10 speed GRX 400 levers/brakes.  They are 10 speed, but match the Shimano 11 speed front/rear road derailleurs (can't be used with any other 10 speed derailleurs except 10 speed GRX and Tiagra derailleurs).  They are ugly, but easy to hold on to.  I am running these with a GRX400 rear derailleur, a 10 speed 11-36 cassette (Shimano road/mountain are the same spacing in 10 speed), and a non-standard front crank/derailleur setup.  You could run this with a GRX crank/front derailleur, or you could run any Shimano road 11 speed (or tiagra 10 speed) front derailleur and a road crankset that matches.  Depending on your crankset, you might opt for 11 speed chain, but 10 speed could be OK. 

Jammer97's crankset would work great I think.

The RX400 rear derailleur is currently available for about $63 from several online sources including Universal Cycles.  FD-RX400 appears to be available from Universal also. 

Last spring before the pandemic hit I had my LBS upgrade my Raleigh Roker from 1x Sram Rival 1 to the Shimano Grx 800 48/31 with a 11-40 rear. My LBS couldn't find the crank. He looked everywhere. I found  one at REI. Not sure if they still have any stock but that might be a go. Good luck

Zman

I was checking out eBay and saw GRX groups with mechanical (aka rim) brakes. Nothing with the hydraulic brakes.

Far as I know, GRX does not have any mechanical brake offerings, only hydraulic. They do have the option of mechanical or Di2 (electronic) shifting. Perhaps this is what they meant? I would be leery about the ebay listing.

OlegR wrote:

Finally I accumulated all the money...but on all online shops they are off the stock 🙂 

I'm looking for GRX 600 groupset (shifters, calipers, crankset, derailleurs) 

any suggestions? 

I have a set of GRX 600 Shifters and the short GRX rear derailleur (no crank or callipers) I was going to use on a build but no longer plan to do so. I am posted overseas for the military and need to check the cost for shipping from DPO/APO back to the US.  If you are interested send me a message and can send pics. They shifters are new in box but the derailleur was used on a TREK Checkpoint for about two weeks.