Tony wrote:
A little over a year ago I had some work done on my garage door
opener. The opener itself is a Craftsman 139.53615SR. It was made
in 1990. It was the unit that was in the home when we bought it, and
we have no documentation for the unit.
/snip/
I asked them for a quote on a new unit. They said their lowest cost
unit would run $295 (that includes installation). They recommended a
screw drive unit with a 10 year warranty for $349. They also said
that if I bought a unit elsewhere it would run $95 to install a
Craftsman and $125 to install any other type opener.

I'm hesitant to deal with this company for a new install if they've
taken advantage of me before, but their prices on new units seem
reasonable.

Nothing wrong with Craftsman openers. In an effort to make the
installation as easy as possible if it were me I'd install a new
Craftsman opener (they are all made by Liftmaster / Chamberlain). I see
on Sears web site that they are selling a 1/2 HP chain drive opener for
$130 with free shipping. If you are reasonably handy with tools and
have a six foot step ladder you will find it reasonably easy to install
yourself in a couple of hours. If you aren't comfortable with this I
suppose you could pay them $95 to install it... it will probably take
them an hour, maybe less.

HTH.