For such a small mono print run I wouldn't bother with a laser printer. A decent inkjet can produce just as good quality (possibly unless you examine it under a microscope!) as a laser printer can
as long as you use good quality paper. All of my mono printing (including things like business invoices, where I want a really professional result) is done, using a decent inkjet, onto HP Bright White (90gsm) Inkjet Paper.
I spent many, many hours researching the best printer for my needs (which includes occasional top quality photo reproduction but is mainly mono output). Economy was always a key point. I quickly realised that inkjet printers using 5 ink cartridges work out far cheaper to run than those using just two cartridges and I now pay around £2.00 per cartridge for excellent quality inks from here:
http://www.inkredible.co.uk/
All of the computer magazines I read (and many websites) consistently recommended Canon Pixma printers as the best available. I rejected the cheaper models (because they only used two ink cartridges) and selected a model that used 5 cartridges. The current equivalent (which I wouldn't hesitate to buy if I needed a new printer right now) is the Pixma MG6650:
http://www.pcworld.co.uk/gbuk/computing-accessories/printers-scanners-and-ink/printers/canon-pixma-mg6650-all-in-one-wireless-inkjet-printer-10029723-pdt.html