Help with Valuation ?

I recently purchased a large collection of diecast (67 to be exact !)
Mostly Porsche, but a few Ferrari's as well
Looking to sell the 3 Ferrari's but need help on value

1)Dino 246 GTS. Yellow, 1:8 scale. Hot Wheels. 9/10 (2 small chips on LF fender, no roof)

2) Dino 246GT Red, 1:8. Anso brand, 9.5/10 no scratches or damage.

2) F50. Red, Maisto 1:24 10/10 condition.

Was thinking $30 asking for the Dino's and $20 for the F50 ??
Maybe all 3 for $75 ??
Again I am familiar with Porsche and Exoto/Spark/Minichamps brands just don't know these

Thanks

Bill
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