a good quality (starter) long-arm set up can be found for around $7000- they go up from their-
just depends on what you consider a mortgage.
do some research- test drive as many as you can find access to- then start looking around for deals on the set up you like the best-
it should be considered at least as important a decision as buying a car- test drive and make sure YOU like the machine- dont buy one because someone else tells you they like theirs- everyone is different--test driving is very important with such an investment