I'd stick with HP ... Most all-in-ones are $99 to $200 with the inkjet printing type. Although it really depends on your printing volume as to which one to go with. To try to find one that will last you with a large volume going through it and be under $200 is pretty tight. Most of the all-in-ones that are inkjet like the Officejet series are throw aways, they work for 1 or 2 years depending on how much volume they print and then the plastic gears, springs, and other mechanicals wear making it tempermental or break and become DOA.
You might be able to find a refurb HP Laserjet type all in one with a warranty which will be able to handle more volume. Also the Laser type all-in-ones are supported for repairs by Authorized HP Dealing Computer repair shops, while the Officejet inkjet types are throw aways.
I am still thinking that a refurb laser printing type all-in-one HP is still going to run you above $300 though. If you can see yourself replacing this piece of hardware once every year or 2 years if you are lucky and dont mind all the $$$ INK $$$ that it will consume, then the Officejet Inkjet type is the way to go... But if you want a model to have for say the next 5-6 years and cheaper Toner printing vs $20 - $30 a piece small ink cartridges since you should be able to print about 2500 sheets on a single toner unit... some units have a X series toner with double print volume for a little more, and savings overall at about $100 for 2500 sheets printer vs the Ink Cartridge ( maybe 100 - 250 sheets printed for $30 - $60 before dry ) depending on if its just text printed or if you have pictures and bordering features that eat it up quickly.
Other important detail is if you want the ability to print in color or if Gray Scale works for you. If color printing then, Inkjet type is the way to go.. if you can get by with gray scale printing Black and White, then Laserjet type is the way to go.
The other option that HP has that might work out well since you are running a business with large volume printed is that you can Lease equipment at like $10 to $30 a month for an all-in-one solution. They even have plans that you state what you predict your printing volume to be and they send you the toner needed. No additional cost but electricity to run it, and you can have the top of the line office model for around $30 a month. If it breaks, HP has to replace ( that is as long as it malfunctioned and coffee wasnt spilled into it ). You can write this expense off in your taxes. If buying equipment less than $600, I think the IRS will allow for it to be written off as a one time expense and not a depreciative asset. See
www.hp.com for more info...
Hope you find a model that works for you.... just be sure to install the software first before connecting any USB printer to avoid any issues. Most drivers want to be installed first and then detect the device during the software installation to avoid Windows from tagging it as an alternate generic device.