I've ordered through them, and I have no issues. Usually each product has some user reviews on J&G so you can gauge what quality the product is.
The CZ-82 is a great C&R gun (if you have the license). Don't expect it to be in "mint" condition. The gun should run perfect, but it will have some marks on it (i.e. bluing faded, some scratches here and there, etc...)