Small block TrickFlow heads part 1

Bare heads $438 for pair
PAC 1903 springs $100
retainers $25
keepers $12.00
Ferrea valves 2.05 intakes $115
Ferrea valves 1.60 exhaust $115
Port heads, valve job & assemble heads $1250.00

Not that everyone is buying them this way, but the roller spring/ti retainer package TF190 heads are $2480.
The springs and retainers that come on those heads are almost $600.