I doubt it's an air fork....air forks have a valve on the lower portion of the fork tube to fill with x amount of air pressure.
That's a $30 fork at best with a $40 mark up.
To me it looks like any other lower quality spring type fork...small steerer tube and stanchions and most likely very heavy.
An entry level air fork starts in the $175 to $200 range and the best among those would be the SR Suntour model...super light with replaceable cartridges when needed...I think RockShoks has a 30mm stanchion air fork under $200...Stantions are the tubes that slide down into the fork ..bigger the more sturdy and stable..28mm is standard size...32mm is awesome like the Suntour forks use but super lightweight as the steerer tube is aluminum.
https://m.ebay.com/itm/New-SR-Sunto...Lockout-MTB-Suspension-Fork-9mm-/231189597607
If you want a decent budget spring fork try the SR Suntour XCR model.
This is best deal going on eBay for an XCR but says last one
https://m.ebay.com/itm/NEW-SR-Suntour-XCR-MTB-Bike-Fork-26-1-1-8-Dia-32-100mm-Disc-Manual-Black/272180839357?_trkparms=aid=444000&algo=SOI.DEFAULT&ao=1&asc=49488&meid=866980bca99e4aa1a4c5428d1b131996&pid=100891&rk=6&rkt=12&mehot=lo&sd=301795133425&_trksid=p2056116.c100891.m5206
If you only want to spend around $60 to $70, the Suntour XCT or XCM would be a better choice over the gas bike offering.
I've personally used both the XCT and the Epicon forks in mountain biking and both worked well for their intended usage.
The XCT is essentially an entry level fork...only has pre load adjustment and a manual lock out...Most all spring forks will soften after a bit of use but it did fairly well on more civilized mountain bike trails and on the pavement.
The Epicon XC is much more refined with adjustment and feels alot more plush on both off and on road and is a considerable amount lighter which is a good thing...For around $200 it's a great budget air fork.
Don't forget to pick up a shock pump if you go with the Epicon XC or any air fork for that matter.
Check eBay for used forks as well...some great deals there for high quality forks..I'm looking at some of the Fox Float 32 forks myself to use on my project when I'm ready for the bike build.