I have been negotiating with a private seller on purchasing his business customer base. it's a selective key customer list, in the field of garden maintenance and landscaping. I have not yet signed any contract but have paid him 2 deposits. one for $1000, which he deems is not refundable. Since then I have paid another $5000 to show my commitment to this deal. I have to ask him to put it in an email that this is refundable if the purchase does not go through. We are coming to a closure of this agreement to settle another $16000 after signing the contract on Sunday, and I will take ownership on Monday. However, recently I have been made aware that there are some changes to the key customer list which does not reflect my original deal on pricing, therefore I am having doubts regarding the quality of the key customer commitments. Am I entitled to claim back the original deposit of $1000, and the $5000 under Commercial Law if I do not go ahead and sign the contract?