Originally Posted by AndyDeelighT
Buying locally also lets you get a feel for the marker.
This to me is the biggest (maybe only) incentive for going to a local shop, granted my local store is likely far worse than most. Being able to physically hold the marker and feel its quality is a big point for me.
However, I would advise against getting the marker you like on the spot. See what incentives that store offers in addition to the price, see what other local stores (if any) offer, and see about prices and offers online. Decide how much those actual incentives are worth and decide which place offers the most bang for your buck.
Regardless, I would avoid buying any special items off of Amazon. Amazon is great for general stuff and odds and ins, but if you're a true hobbyist it tends to be a place to avoid. This applies to just about anything, not just paintball.