The dilemma all first time offset buyers face is that the good ones cost a ton of money and the cheap ones don't cook worth a darn.
Like you and most everybody else who started the smoking addiction without much to spend, I bought a $200 cooker and did a few dozen cooks (a few came out pretty good) and then tinkered endlessly trying to get it to perform like a $1000 cooker.
Giving up on that I bought a $600 cooker and did a few dozen cooks on it tinkering with it the whole time trying to maintain steady temps in the 225/250 range but ending up having it wanting to run at 275/325 (insisting really) and in any case spending endless hours of fire tending to get top quality brisket AND having to source properly aged wood plus storing it in my back yard (which provided a sweet home for mice, rats, roaches and deadly spiders) and also made me buy a fancy rig to keep the wood up off the ground and covered under a fancy zippered waterproof cover ( which the rats especially liked).
So the moral to the story is; if you buy something you can afford that is low cost and low quality or has low functionality, you will in the long run end up spending much more that if you just bit the bullet and invested in a higher level product and get on with it.
I finally bought a
Masterbuilt 560 for $500 more or less and after a heroic struggle to put it together, now have a cooker that I don't have to spend endless hours tinkering with to maintain temps and burns mostly charcoal briquettes with some hardwood chunks added to produce sweet smoke and am pretty much as happy as a clam in a mud bank cooker wise.
What ever you do, try to resist the urge to buy a $200 offset, they just don't cook very well at all.
Best plan may be to peruse the Craiglist and snatch up a used unit if one pops up.
Garage and estate sales also offer some glimmer of hope.