Unless of course one of you happens to have a loyalty card that gives you a lower price. Happens all the time.
Yes, but if you are a member and getting the lower price, I am free to join the club (a one-time thing) and get the same price as you.
If a shop will let me give them my name, address, and phone number and let me show them that I know how to look up prices on the Internet, and that will entitle me to discounts on all future purchases without me having to do any further price checking online, I'm fine with that, too.
Or if somebody takes the effort to clip (or print) coupons.
I view that kind of like having a sale. I don't have a problem with it as long as everyone can get the same price on sale day.
You will probably then say "how's that different than price-matching Leisure Pro? Everyone can clip the same coupons. Everyone can come on sale day. And, everyone can check LP and get the same price that way, too."
The difference is whether the shop is proactively offering a discount to any and everyone that wants to take it - without regard to the competition - versus a reactionary discount that only comes in response to their competition. If LP has widgets for $100 and your normal price is $150, but you decide to offer them (to any and everyone) for $100 in response to LP, that's cool. If you keep offering them for $150 but then sell them for $100 to just the people that come in and cite LP or people who are your buddies, then that's not cool (in my opinion). At best, you are taking advantage of some people's ignorance.
At the end of the day, do you want people to trust you or not. If you want them to trust you, then on any given day, if you say "this is the price", that needs to be the price for everyone on that day. If you have a coupon out that would apply, maintaining trust would suggest (to me) that you say "this is the price, but we do have a coupon in ScubaShoppers Monthly, if you want to go get a copy of that" or, "we do have a coupon code posted on ScubaBoard, if you want to go look that up." The point of those coupons being to drive people to look at the place where they are published, right? Coupons are basically advertising and that's a 2-way street between you and the ad agent, I think.