Their pricing is indeed extremely overpriced, particularly their self-hosted pricing.
10 targets - free
25 targets - $2300/year
50 targets - $4500/year
100 targets - $8800/year
200 targets - $16800/year
400 targets - $32000/year
500 targets - $39000/year
.
.
.
5000 targets - $290000/year
inf targets - $420000/year