I would say not worth it. Unless you are there when they mount it they cannot set up the scope to properly fit you. Also I don't think you would even be on paper at 25 yards with a bore sight from one of those places. This hunting season two of my friends had places bore sight thier center fire rifles and neither was on paper at 25 yards. Luckily they didn't pay for it.

Get some Lock-tight and read up on how to mount a scope. Then bore sight it yourself at 25 yards by looking down the barrel with the breech plug removed and then adjust the cross hairs on the scope to be 2-3" high.

Use the $17.50 to buy ammo.

Tom