Maxine: I feel your pain! I only use 3M double sided tape, it's strong and really sticks. But it is expensive. However, up here we have a warehouse store called Sam's Club (it's WalMart's warehouse store) and the tape is quite a bit less expensive there. I can buy a pack of 6 large rolls for the price of about 2.5 rolls if bought anywhere else.
Some time ago I received an ATG by Scotch and it took me a while to get the hang of it. But now I love that and thanks to some tips by others on SCS I buy refills at the Tape Depot.com for a good price and I actually like that adhesive better than Scotch that's made for the gun.
You are so right, cheap adhesive is no bargain. Whether it's glue, tape, foam dots, etc. Quality matters.
"Jimmy, some of it's magic, some of it's tragic,
but I had a good life all the way..."