I thought $500 for a motor is rather high also. I did not get an
offical quote on the motor, but I did get an official quote on the
furnace. Maybe the motor would be less, like $300, but still they say
the furnace that's older than 15 years old is a waste of money to
repair.

The furnace I would be getting for $2800 is Bryant 310 something. It
is an 80% single stage jobber with an inducer fan. 2 year labor
warranty, 5 year parts and 20 years on the heat exchanger. The fuel is
gas, BTW. It is not the fancy wiz-bang 90% furnace with two heat
exchangers and variable speed motor, etc. The motor is not variable
speed, though it has 4 speeds that can be set long term. I live in
Washington DC area, so no severe winters here, but still gets cold and
nasty.

I am handy and can replace the blower myself if I knew where to get one.