Dice-Money Chess

Rules

FIDE chess rules are followed, except as follows:

• White starts with $1 and black starts with $2.
• Nobody can have more than $100; if you have more, it is set to $100.
• You can only promote into lost pieces (which haven't yet been placed back onto the board).
• On your turn the sequence is: Roll 2d6. Optionally spend money (on one item only). Make a normal chess move.
• If your first chess move during your turn is a move with a piece corresponding to one of dice (1=P, 2=N, 3=B, 4=R, 5=Q, 6=K), then earn money on the other dice. Castling counts as a king move. Promotion counts as a move of the piece you promoted into.
• If you make more than one move per turn, you still have to not end any individual move in check, and you cannot capture a king as any part of your move, but you can pile on multiple checks.
• Pawns can double-step from second rank (only).
• Pictorial check/checkmate is used.
• When any player spends money, its price increases by $1 for next time that player buys that same thing during this game.
• When one player wins the game, that player's prices are the initial prices for both players during the next game in a match (prices are reset at the beginning of a match).

Things to spend money on:

• $5 for one extra move after your main move.
• $15 for two extra moves after your main move.
• $5 to place any lost opponent's piece onto the board on any vacant space. Pawns cannot be placed on first or last rank.
• $3 to place a lost pawn of your color on a vacant space other than first or last rank.
• $7 to place a lost knight or bishop of your color on a vacant space.
• $11 to place a lost rook of your color on a vacant space.
• $19 to place a lost queen of your color on a vacant space.
• $10 to allow your king to move any distance this turn (like a queen does, and can pass through check).

Notes

Although some people used zorkmids in their chess variants, I used the ASCII currency symbol (also known as a dollar sign) here.

Maybe the prices for various thing need to be changed.