If you have a willing seller with a willing buyer doing creative financing, it's the  simplest of transactions.

I've brokered a number of 1031 transactions and can help with that as well. 

I've had business and conducted hundreds of sales transactions and find it very underhanded.

HELOCs are specifically helpful in this case so long as you are consistent with paying it back in a timely manner for the next transaction.

What type of transaction fees should I be looking to pay and is there a down payment required?

I usually run several CMAs, with different criterial, and of course compare tax appraisal value with a wholesale price, add 5% as a fee to a transaction, in some cases.

Novo also integrates well with various business tools, which might streamline your operations.Business Credit Cards: If you’re looking for a solid credit card option, Capital One Spark Cash Plus offers unlimited 2% cashback and no foreign transaction fees.

And you're right, it moves fast when the value-creation chain is created on both sides of the transaction.

Would we see increased cross-border transactions and a surge in property investment opportunities?

The salespeople tell you they will keep in touch and hold your hand through the transactions but they will not contact you after they get you to pay unless you have capital for a deal of theirs.