Seriously?...we are now recommending that someone goes to Ebay to buy a professional product?
This is a professional site and it is not profesional to buy pro products from Ebay.
If Sienna X have put their prices up then all of their authorised and legitimate stockists will surely have to follow suit. Stock costs can increase it is the way of business, you can either absorb it or pass it on to your clients with a price rise of your own.
Better that than buying off Ebay, surely?