This is definitely one of these services almost too good to be true. You covered practically every aspect of your offer. No upfront payment, refunds, huge discount.
May I ask how you manage to found discounts so big? I am sure this is your personal secret info but some people might be afraid that fraudulent financial source is used.
Thanks for your interest. First of all, there is often a big difference between retail suppliers (e.g. Expedia and Amoma). At times, the difference can be as much as up to 60% for the same hotel. Usually, Expedia delivers better prices. Basically, my 50% guarantee covers Amoma pricing, but I'm always trying to get you the best price, even if it's $50 or so per stay below Expedia.
There's no fraud in bypassing hefty fees that operators of the above websites charge for simply booking you a room in a hotel. I use my own connections and my own funds to pay for those. Only time will tell this is an honest and long-term service.