>>9538804trust me, don't worry too much about focusing on transformers in a collective or line-wide sense
just get the figures you like and don't worry about completing a team, a wave, a squad, etc.
eventually you'll be buying or hunting toys you don't actually want for their own sake, but as pseudo accessories for the ones you really want
for example i picked up the studio series shatter to go with dropkick, still haven't unboxed her and might just sell her
for your original question, kingdom and earthrise are done so their prices will only go up in future, barring shelfwarmers that go on clearance
the SG releases all have a higher base cost from their retail counterparts
ultimately up to you, just pace yourself and budget within your means, it's a slippery slope
