1—Financially, yes.
2—Not true. Most of reverse lend lease was arms and supplies, from socks to heavy arms.
Yes, you are correct about Reverse Lend-Lease. I looked it up and found this:
“Some of the cost of the lend-lease program was offset by so-called reverse lend-lease, under which Allied nations gave U.S. troops stationed abroad about $8,000,000,000 worth of aid.”
Given that the war took place abroad (from America’s perspective) that would make sense.