You can purchase 1Tcredits with 126 MRP. This will give you 102VP. If you have enough to buy 15 single Tcredits. You are automatically an EA.
Besides, you can redeem your MRP at the member reward Store by clicking on where you have MRP at TC to choose any any product you want that your MRP can pay for.
You can convert your TCredits to MRP by participating in DP bidding for maximum benefit.
Hope this help.