I thought you may be asking about the store, Crafters Companion. If so, they get a thumbs up from me!

I ordered some markers and mistakenly had ordered duplicates. I contacted them and it was no problem to send them back and get a refund. There also had been a backorder and I was promptly informed and given the opportunity to leave them on b/o or cancel until they were in. Good communication.

I've thought about trying those blocks also - hope you like them!