What is absurd about the expense of playing three games as a beginner? Do you mean that you think rental costs are too high?
Two months spent waiting to be approved? Are you referring to the requirement to play three games in more than 56 days or did you have to wait that long for your UKARA number to be sent to you? If the former, that is a requirement set by UKARA so that you can show that you are a dedicated player. If the latter, such a wait is very unusual.
After the first year, assuming that you keep your UKARA registration at the same site, there is no extra expense involved as you qualify just by playing at the site.