I'm not sure about the cost, but here's my thoughts, since you're only planning to keep the car for the summer . . .
Tow the car to a shop that is willing to replace the broken timing belt
When the timing case covers are off, if there's no major oil leakage obvious, just replace the timing belt, assuming the tensioner, idler and water pump are in reasonable shape
Advertise the car for sale at the end of the summer. You might be surprised and get $1500 or so for it without too much of a hassle. There's a LOT of Camrys of that vintage, and even older, still in operation in Los Angeles, where I live.
One of my coworkers is actually looking to buy a Camry of that vintage, as a daily driver. I just mentioned it to show that people still place a value on such cars
To anybody reading this . . . I wouldn't advise such a partial repair for anybody planning to keep their car long term