What "mainframe"? Unisys A Series, ClearPath? IBM Z Series? What is mainframe for you?

I'm going to go out on a limb and guess they mean normal computer cases, having often heard people refer to standard desktops as "mainframes".

I mean mainframe server racks/cabinets not PC

Bassai:

 

I mean mainframe server racks/cabinets not PC

 

OK, so you're after cheap rack units.  What height and depth do you prefer?

800x1200x2090

Perhaps phone some of the ex-lease computer dealers or computer recyclers.  I've had excellent experience with these guys:

http://computerrecycling.co.nz/

http://busmgtsol.com/ 

http://nzcomputersales.co.nz/ 

I was looking for new ones thanks.

Okay a generic 19" server rack isn't a mainframe case but okay we can roll with that.

I can't recommend anywhere to buy cheap rack cases (other than Trademe and recyclers as mentioned by Dynamic) , but assuming you want to mount standard servers in the racks, just buy APC or something similar, A little bit of penny pinching is not worth the pain that cheap crappy racks will cause.

Your server vendor will likely have a range or racks.  APC (the UPS manufacturer) as mentioned has an excellent range.

The only cheap brand I can think of is Dynamix which is a local brand which will be just relabelling an imported unit.  I've bought half a dozen or more in the last 5 years and never had any complaints about them.  The company does not sell direct to the public, but they have a public web site you can use to browse their products (http://www.dynamix.co.nz/index.html?do=NETRACKS&code=NETRACKS look for Network Cabinets on the left).  From there you can type a product code into your favourite price hunting portal like https://price.geekzone.co.nz/ 

The last one I bought was a Digitus brand.  This was a pre-assembled half rack on wheels.  Happy with the build quality again.  You could have a look at the importer's web site again and then search for the product code you find, as again the importer does not sell direct to the public.  http://www.dove.co.nz/products/desktops-notebooks-and-servers/server-cabinets 

After looking I decided on a Infinte Solutions system (European quality) www.infsol.co.nz

42U 800x1200x2090 the price was ONLY $1650 + GST

Cable Direct Price: $3,028.83 + GST

Ascent Price: $2,064.23 + GST

ETL Price $2454 + GST

Some of these wanted me to take an account, others demanded I get an account before they would even give me the bloody price! Others said I had to place minimum orders! What a hassle!

Cant believe the price variations! 

Thanks for your help guys!