Dip your toes into 3d printing and get some uv resistant filament. ABS seems to work very good, uv resistant PLA will also do the trick
But with pla you will have to experiment, you must make your prints ~0.5 to 1% bigger, it tends to shrink.
PLA is very easy to print but you have to "cure" it after your printing, in a oven after the heater shuts off you put the tracks in at 60C.
So you beat the sun and can stay true to measurement.
ABS on the other hand is very difficult to print, but you can skip those steps, yes there is always a but...you will need a enclosure for your printer.
(small tip, buy a ender!)
On thingyverse you can find a lot of tracks to print.
The biggest problem is time, on a 50x50cm platform you can print just 1.6 meter of track in ONE day.
I can post my 3d files as well, i think i still have them
Look at some of mine posts over this forum, i build them with aluminium strip, with very good success.
I still must make some updates

, sorry.
You dont have to have expensive equipment, but you will need skills!
For those that remember those experiments....i have a suspicion that my experimenting is over.
For all new readers: I changed the topic title because: total wooden tracks are a JOKE, i learned a lot and this forum, and they give me the knowledge to make some decent tracks, read upon my mistakes to your advance and make your own tracks in your own capabilities/wallet. Good evening you...
www.gscalecentral.net
Cost wise:
For 3d printed track(from my memory) around 6.50e a meter regardless PLA or ABS.
2 euro for 1 meter with aluminium strip incl: azobe wood and putty.(if bought strip in bulk 100 meter minimum)
Both methods: strip or 3d require investments and a learning curve.
Buy a 3d printer, learn how to use it and learn some 3d drawing program....
Or:
Basic tools like: ruler, pencil, putty dispenser, jigsaw and a sawing table, master some skills and SAFETY if you are not used to sawing tables.....
Cheap jigsaw 35(go for new!) cheap table that can do the trick ~100.
Hope this was informative and of some help to get you going.
With best regards, Igor.