Hello and welcome to SaleHoo TD :)
Good question! We have no official guarantee for our suppliers, but we only add suppliers to our database that either accept a secure form of payment (meaning you can get your money back should something go wrong) or have a proven track record of excellent service.
For these reasons we have very few issues with suppliers failing to supply goods to customers.
In the unlikely event that you do have a problem with a supplier, please file a complaint by clicking the link on the supplier's profile page within SaleHoo. We will immediately take steps to resolve the situation and get your money back.
Hope this answers your question :)