I gave you a few suggestion on another one of your posts if you want to try it yourself (for free) and see how it works.
But, if a shop can get your bow tuned properly for $25, and that allows you to shoot better, and keep the old bow that you have (and probably couldn' t get much if you did want to sell it), then it is $25 well spent. If you watch how the guy at the shop tunes the bow (if that is a possiblilty), you will also learn a lot of valuable information. It will be an excellent value, not a rip-off in any way.
You can' t get this done at Wal-Mart. You need to go to an archery Pro Shop.[

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