Free no-auth SGP independent-baseline pricer. Takes a list of legs with American prices, returns the independent-baseline parlay price (product of marginal implied probs converted back to American). Capped at 60 requests/hour per IP and at 4 legs.

This is not a real SGP price — real SGP prices include correlation modeling (correlated outcomes from the same game push the parlay price away from the independent product in either direction). Use the full /v1/sgp/price for literature-based correlation-adjusted pricing.

Body: {"legs": [{"price": -110}, {"price": +150}, ...]}.