Three stacked rounded cards, one per tier, each with an accent-tinted fuel-pump icon and price (Splash & Dash #64D2FF blue, Half a Tank #30D158 green, Fill 'Er Up #FFD60A amber — the app's fuel palette), name + blurb on the left, bold accent price on the right. Cards sit on clear list rows with their own rounded fill + subtle accent tint. Purchase flow, per-tier live prices, disabled state and footer copy unchanged.