I got just a cheap one - under $10. Main use I've found for it is for gluing shipping package material. Cheaper, stronger and neater than packing tape, but not really cheap overall. My stuff is all different sizes so I buy cardboard separators instead of a lot of boxes and wrap the item(s) accordingly. Have had comments on how "good" my packaging is. Don't use it much for other stuff, but when needed it comes in pretty handy.
The big cost is the glue sticks. I buy them by the case. They do not last long. Kind of like the cheap razor with expensive blades.
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I took the tests and retirement is the best job I'm suited for.
Now I know why old guys wear suspenders.