You could try any local electrical\computing stores such as best buy or staples. Please take a look at the following link - http://www.resaleworld.com/Printer-and-Scanners.html
The best place I can find online to get a printer as cheap as that is Harvey Norman. After some research the cheapest printer I can see there is $28.95 which would be in your price budget.
The cheapest place to purchase an OfficeJet Pro printer from HP would be online. Specifically on The Twister Group, which offers printers at just $64.
One can purchase a Laser Jet 2840 printer through Amazon or other HP retailers. If one wants to look at the printer first and buy it in person, office supply or electronic stores would be the best place to buy the printer. Best Buy, Office Max, or Office Depot would be common stores that are located in most cities that would carry the printer.
The best place one could go to purchase Nik software would be from the official Nik Software website. Google has made the who Nik Collection available for $149.00.
I located a site that will provide printer driver collection of different printer software choices: www.driverguide.com/ If I knew the make and model of printer the customer had, then the results would be more specific.
The best place to find a turntable cartridge for a printer or computer would be on a site such as Amazon. They have many items that are available for lower prices.
The best place to purchase accountancy software would be online. One such site that offers accountancy software is Netsuite Financials. They have more than 16,000 organizations using their products.
The places to purchase furniture design software are many and varied. The best place to start would be Amazon. If you are on a tight budget, a good option would be to try eBay.
Best Buy offers the HP LaserJet 3800 model printer along with numerous other makes and models of printers. An office supply store would be another great place to purchase the printer.
One website dedicated to selling discount software is buycheapsoftware.com. If a wider selection of software is desired, amazon.com would be a reliable place to purchase it.
The best place to buy ecommerce software is at a computer or technology store. A good example of this is Best Buy. If you cannot find a store, you can purchase the software online.
One could probably purchase a digitizer from a software company. Some manufacturers do offer them. There are many features used. The best place to buy would be the software partner of the manufacturer.