I wish I can find a scuba store like you. You are lucky. 2 day ago, I brought my Omega 75cu to a Paintball shop 15 miles away from my house, and It took me 40 mins to get there because of traffic. However, his big tank currently only filling up to 3,800psi. He told me that I have to let him know that I want a scuba 4,500 psi filling, so he could fill his big tank to 4,500 before I came. Ok then ... It's ok ... I just want a filling ... so 3,800 instead of 4,500 ... still ok ... After filling, he charged me $25 for filling. Wow ... ridiculous price ... I paid and left. However, after I got home, I checked the pressure ... it was only 1,500psi ... wow 2nd time ... Never go there again.