They seem pretty legit and relatively safe to deal with. Although we at SaleHoo cannot guarantee this 100% since we have not dealt with them personally.
Based on the quick search, they have been online for quite sometime now and welcome potential customers who want to visit their warehouse. They accept cash, cashiers check, bank/wire transfers. I didn't see any negative comments about them (but no positives either).
Try a sample order first and see how the deal turns out.
All the best to you! Cheers :)