If you are going to deal in electronics loads from any liquidator, you need to know what type of stock you are buying.
For example, the cheapest lots will be salvage, basically means nothing is working and stock could have major damage. The next lot will be customer returns, these loads can also be quite inexpensive, but while you should find a percentage of products working, there will be a percentage bot working and some possibly suffering major damage.
The most expensive electrical loads will be scratch and dent stuff and new over stocks. These type of loads will cost you the most, but you pretty much get what you pay for.
Ask the liquidator what type of stock the load consits of, and if they say mixed or even worse, won't give you a straight answer.....tread very carefully!
You can make a stack on liquidated electrical loads, but you have to know what you're doing, those that don't run the risk of losing out BIG time!
Unfortunately I can't comment on the supplier, not aware of them at all.