under $1 to around $75+ per panel, depending heavily on order volume, panel type (flexible vs. rigid, mono vs. poly), quality, and whether you're buying wholesale (MOQ applies) or retail. Expect bulk pricing (thousands of watts) to be very low, around $0.09 - $0.20 per watt, while smaller quantities or specialized flexible panels can be much higher per unit, like $60-$70+ each for smaller orders. 

Key Takeaway: For the lowest prices, you'll need to commit to large wholesale orders (thousands of watts), while single or small orders will have a much higher per-panel cost.