Electrical problems 1999 Lexus ES300

I began having problems with my battery at 102K miles and had the battery replaced. After another 1000 miles, the battery went dead again and was replaced at 103,651 miles along with a new alternator, which was replaced due to a "failed ripple field." At 103,714, I needed to have the battery boosted again. A system test showed that the alternator was putting out 14.6 volts at idle and 126 volts with loads on. I continued to experience dead battery problems after not using the car for a few days and was told that was "normal" during the winter (the car is garaged). At 105,202, the battery went dead again, and now I am told that the problem has been traced to the "seating memory, " which was draining the battery. What is going on here, and is it worth it in your opinion to repair this car? In addition to replacing this faulty memory ($274), other services (leaking gasket, $840; clogged fuel injector, $229; "evaporator" service, $160; 2 year service, $625) come to $2,300 parts and labor., 202