Sorry I know this post is 2 yrs old but what is your meter called? I went to the site you referred but couldn't figure out which meter is the one you have?
Although there is no longer a multimeter for $3.00 on HFT's website, I did find one for $4.99 (cost probably went up since the post):
7 Function Digital Multimeter
I own one similar to that one and it works fine. Hope this helps!
Cheers and Happy !