The phrase "a later purchase" is correct and usable in written English.
It can be used to refer to a purchase that occurs after a previous one, often in discussions about transactions or consumer behavior.
Example: "After considering my options, I decided to make a later purchase of the upgraded model."
Alternatives: "a subsequent purchase" or "a following purchase".
He reckons that, in all, Mr Montesinos and his cronies may have pocketed several hundred million dollars.In particular, suspicion has fallen on Peru's purchase of 18 elderly MiG-29 aircraft and some Sukhoi SU-25s from Belarus in 1996, and a later purchase of three MiGs from Russia.
The limestone outcrop behind their weekend home, a later purchase, is the southern edge of the Vertes hill country, and its elevated position among narrow plots planted with grapevines, lavender and fruit trees commands fine views across a wide plain towards Lake Balaton, the largest lake in central Europe.
Companies can get more benefit from running image-oriented brand ads, so even if people don't click, the fact that they scan beyond the top result means they're getting attention that may cause them to consider that brand in a later purchase--or maybe not all that later.
Its also easy to add images to a 'pasteboard' and build up a selection for later purchase.
You can also save a deal for later purchase.
Edward's health collapsed, but he nonetheless took a job as a reporter for a Saratoga newspaper, later purchasing a small Democratic paper of his own, The Saratoga Sun.
Some scores will be available only in excerpted form, as an inducement for later purchase.
The Braves, who would manage the facility on a daily basis, could later purchase the stadium for 50% of fair market value.
But there is no better evidence of Al Qaeda's search for everyday targets than the discovery of two computers once used in a Qaeda office, a desktop and a laptop, that were later purchased by a Wall Street Journal reporter from a computer merchant in Kabul for $1,100.
One good point would be if you plan to save some of it for a later major purchase or toward a long term goal.
Obviously it's for the lawyers to work out the details, but it seems to me what he must have been granted was more a method of identifying and later purchasing a song, not the plain act of tagging and downloading later.
