110 is a bit pricey. If its a slim and not a super slim and you want it, sure! Just so you know, I have my doubts the shop will have done much if any work on it.

Please please mod it. Most people are running their system with the stock thermal paste but the only way to check temps and control fan speed is to mod it. There's good step by step guides on how to mod but it will likely take a day of reading before you're comfortable with it.

If it has the original drive be prepared to replace it. In fact, if this is gonna see heavy-ish use, I'd swap the HDD day one and blow out the dust. Consider repasting if comfortable.

If you are 100% gonna mod it, it is worth checking the slim's serial number. While a vast majority of slims can run custom firmware (as opposed to HEN which superslims have), my recollection is some late slims cannot run CFE and can only do HEN.