If you can tolerate a 3 week wait it may be looking at Dvarw FL MTL and Kayfun Lite Plus clones on AliExpress, both an absolute doddle to build on - the Dvarw comes with a range of airpins (don't be tempted by one without airpins) and the Kayfun Lite can be adjusted from super tight to airy with a single screw. Both are available from around £20 and are hard to beat.
All you need to build is a small spool of 26, 27 or 28 gauge wire (I prefer 26 as I find 28 a bit too skinny) and a pouch of cotton and it will last years. Coils will gunk up just as fast as stock coils, but you can just throw out the cotton, clean the wire and rewick in a couple of minutes - or just ditch the coil and cotton and start again as the cost of a few inches of wire is miniscule.
With both you don't need any tools as the little blue screwdriver shaft is an ideal size for wrapping wire around for a small MTL coil (although it is tiny and a bit shit for a screwdriver) and once the coil is clamped between the posts you can just twist the ends of the wire (helicopter style lol) and the excess 'leg' length will snap off. All you need is a pair of scissors to cut the cotton to length. Eventually you will find yourself buying a few decent tools if you get into rebuilding (particularly a decent screwdriver or two, wire snips and decent scissors) but you don't need much to start out.
Buying an RTA can be a bit intimidating at first but there are a lot of Youtube vids and once you get the hang of it generally it only takes a few minutes to build a single coil MTL tank.