BuyIn Game

Hello Every Body! After all I just came across to publish my Idea in detail as following:

Name: BuyIn
Players: 2-4 (more player, better)
Time: ~1hr
reference: This game is designed based upon a German game called Mensch ärgere Dich nicht (https://en.wikipedia.org/wiki/Mensch_%C3%A4rgere_Dich_nicht).

Basic rules
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• There are 4 colors;
• Each player has 4 pieces to drive to the end (the 4 same colored rooms in the end. in this game we call it the parking)
• Throw: Each player at her turn, throwing the dice.
• Move: After throwing the dice, the player has to move a piece by the number shown on the dice (clockwise), if possible. One score moves one piece one step ahead; there is no step back at all; e.g. if score is 4: one piece can move 4 steps ahead; The move cannot be skipped, else it is not possible to move (e.g. no piece in the game); each Throw moves only one piece not two or three or four; Player decide which piece to move;
• Bringing in: Player can bring one piece into the game if the score on the dice is 6;
• Prize: When the score is 6, there is a another try for the player as prize of 6; if the prize is 6, yet another try and so on(you need to move the 6 before throwing the dice again for prize)
• Hitting: There is no space for two pieces in any room; Players can hit out other players' pieces if they reach to an occupied room; There is no safe room in the board other than parking' rooms;
• Parking: if the player can move one of its piece successfully one full round in the road, it can go to parking, using its scores; players cannot go to other players' parking's.

Negotiation (Buy/Sell) rules:
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• Each players' score can be negotiated(sell/buy) by other players in any form
• Each player has 160 BID (BuyIn Dollar, BI$) in the beginning. This credit will be used to sell/buy the scores;
• There is no deal free of charge
• Minimum fee for a deal is 5 BI$
• Deals' fee are 5BI$, 10BI$, 15BI$,… i.e. no 12BI$ or 13.5BI$.
• Each piece which goes to parking will get 40BI$ as prize;
• The one who send all of their pieces into the parking is done with the game.
• First player who fit all pieces in parking will gets 40 BI$ , second player 20BI$, and 3rd player 10BI$;
• If players decide to stop the game at a point, they will get 5 BI$ per piece in the parking;
• If they decide to stop the game once the first player done, still the first player will get 40 BI$ and the rest 5 BI$ per piece in the parking.

Negotiation (Buy/Sell) Samples:
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• You can buy/sell 6, to bring your piece in the game; but the prize of 6 is with the owner; or you can buy/sell the prize(es) of 6 too;
• You can buy/sell the score which may hit you;
• You can buy/sell for the score to hit somebody
• You can buy/sell a score and sell to somebody by some justification.
• You can buy/sell the scores which are useless for somebody (e.g. there is no piece in the game to progress)
• Each player in their turn, legally owns its score and can sell it to other players after negotiations.
• Each score is negotiable.