You can make your initial 50% deposit payment securely here, using

NOTES: You may need to notify your bank about the transaction. If you wish to pay with a debit card, use the credit card option regardless. The debit card option is for local South African payments and will most likely not work for an overseas transaction. The amount will be shown in South African Rands (ZAR) and will be for the amount of just over R83,000, which roughly converts to $5,000USD.