Which comes with Snorkel fins. Which will put the OP at a disadvantage in class and during any longer swims since he'll have to work harder to keep up since they're typically shorter/wider/stiffer? than dive fins. In a couple years he'll be upgrading whatever breaks/wears out first. Probably a fin buckle.
I still suggest you buy a mask from a dive shop so you get one that fits. Going thru certification with a leaky mask takes your mind off what you're supposed to be doing at the time and it could unsettling if it floods cold water during the checkout dives - I assume the MD waters aren't real warm....
Shops sell masks starting around $40 or less. My shop has several racks of them, the highest is about $85, the lowest $25. I have a $29 Shewood soft-skirt mask that fits better than my low-volume, oversized window $75 Tusa.
I used Leisurepro.com for the info below but Scubatoys, Dive Right In Scuba, Divers Supply and many others are also options.
You can buy a better snorkel than you need online for $15 or less.
Snorkels buy at LeisurePro
If you're a standard size, boots are also $25 or less. The only issue then is thickness. 5MM is probably a good overall compromise. 5mm Boots buy at LeisurePro
Fins can be as cheap as $25 for dive fins. Oceanic Viper's are a dive fin made by a dive company.
Next step up is any number of fins in the $40-50 range - for cold water diving, you want open heel fins/boots also. Fins buy at LeisurePro
Lastly, gloves are around $20-25.
So not $50 at Wally World but it's all dive gear that should last you a long time. $150-200 tops.
Also let your shop compete because they may be able to get close less taxes. And you get to try it all on first.
I'm not sure what disadvantage we're talking about with respect to fins. My OW dives, in the local quarry here, didn't have any "longer swims" and I haven't heard of many that do. In either case, you're not supposed to be racing so unless your OW is in some ripping current (unlikely since it's not supposed to be done that way) it shouldn't matter at all.
YMMV. I still use my closed heel "snorkel" fins for pretty much all diving where I don't need booties. If I had smaller feet I'd use them for those as well. I'm not doing hundreds of dives a year (or even a decade at this pace) but my fins have traveled all over the world with me and have lasted for better than 10 years. I am also definitely in the minority in that I prefer the closed heel fins.
I must be lucky with masks because I simply don't have problems with them. OW teaches you to clear your mask in the first pool session, if I remember correctly, and for me "fit" has never been an issue. I will admit it's nicer when I'm not clearing every few minutes, but I think it's an issue often overstated. I simply wouldn't spend $40 on a mask unless it was an emergency. (I'm admittedly a cheap bastard.)
If you can find "dive fins" for $25 I say that's a great alternative. >$100 in a dive shop is just foolish, though. I use wetsuitwearhouse.com for neoprene. Most folks diving in the quarries around here use 3mm or 5mm gloves and 7mm booties so those prices are about right. I'd also recommend a hood for another $20-$30. I hadn't really thought of any of those as requirements for my course but they were for the cold water OW dives.
I haven't found a shop in this area that will even try to compete on prices. Maybe it's because I'm not particularly interested in buying high dollar items but so far every local shop I've asked has flat out said they won't bother. I don't blame them and I agree with giving your LDS the opportunity but, so far, I haven't had luck. That said, I don't use my local shops as a fitting station just to turn around and buy something online. I think that's uncool. If you're getting the help you need for fitting, spending at least something in the shop is the "right" thing to do.