Is Ioffer.com A Good Site To Buy Products Wholesale?

There’s always going to be people who like and dislike the site. Personally, I like the site, and from your question, it seems like you had a decent experience with them so far.
I mean, it all depends on what you want to buy and resell, whether it’s prone to fraud or fakes or anything like that. Just do your research beforehand to make sure it’s legit. Make sure the people you’re buying from are legit.
If you decide to do it, have some patience, because it’s going to take some time to promote yourself and your store. But the good thing is they don’t charge fees for listings, stores, pictures, etc. so you can keep it up as long as you want until it sells!