I have some quick fun with steemmonsters by ripping 225 packs.
Total investment is 573 SBD (~331.3 USD) for the packs + 90 USD (5925 Trons) for the portions to increase chance to get gold / legendary card - Total around 421 USD
According to peakmonster, before I open the cards, my collection worths around 78 USD (using list price) / 68 (using bid price) / 76 (using market price).