"point of purchasing" is correct and usable in written English.
It is used to refer to the physical location or online platform (such as an e-commerce website) where goods and services are purchased. For example, "Online shopping has revolutionized the retail landscape and shifted the point of purchasing from brick and mortar stores to digital platforms."
Wheelchair access: Arrangements should be made at the point of purchasing tickets, as spaces are limited.
But what pushed me to the point of purchasing tickets to a midnight screening a month in advance was the surprising feeling of wanting to be part of the sort of cultural phenomenon I usually scorn.
They range from $500 to $700, which totally negates the point of purchasing an old iMac, right?
I don't see the point of purchasing any new phone on Sprint with the launch of the Palm Pre looming, but if you're itching to get something new because your old phone was dropped in the toilet after a drunken night out this weekend then I'll have you know that the mini Instinct is now available.
But the size appears the same, and the whole point of purchasing the light-guide company was to get the team and their patents, which essentially laminate the light diffusion layer right onto the screen without adding much in the way of depth or interfering with the touch system.
Press kits went out to the media, point-of-purchase displays to dealers.
At age 29 Arthur founded a leading company in the point-of-purchase display business.
Such point-of-purchase screening has the added advantage of assigning responsibility to the carriers themselves instead of the government.
Finally, the Array Marketing Group in Los Angeles is acquiring IDMD in Toronto, New York, Chicago and Paris, which makes point-of-purchase communications materials.
To be within an arm's reach of desire, Coca-Cola has to be in 10 million points-of-purchase.
Rather it positioned itself to clients as a method of closing sales that can be more efficient than direct mail, point-of-purchase displays and salespeople.
