I think what CatLvr is referring to is the fact that YMI used to have a LOT of selection. Like when it came to board and stones sets, there were quite a few options and they even had slate and shell stones at one point.
To answer your question, CatLvr, I've had some experience working with YMI and can tell you that they generally take items off the site as they sell out. It's not so much that they don't have anything anymore, but it seems they have more limited quantities than you might normally expect. So the best thing to do is to shoot them an email to see when then next shipment of (Insert Product You're Interested In Here) is coming in so you can get a better idea if you need to just go to another vendor or can wait. Hope that helps!
Ah, that makes a lot more sense. From looking at their site, it seems as if complete sets are in short supply, but there are a lot of options for bowls, stones, and boards, so you can always mix and match to create your own as well. Contacting them is never a terrible idea, though.
So I sent YMI an email and they replied that set products will not be back until June.
BUT!
The best part about these awesome people are the fact that they create $10 discount code for those who want to buy stuff separately now. It's ZP7U5FGK and should be good 'til 5/30. I shared it here to say thank you for you lot advice.