The closest matching 4.5-digit bench multimeter currently available from Tenma is $300.90. That ain't pocket change in my neighborhood. We're not talking about some $35 meter from radio shack.
$300 for a "house" meter - ouch! There are dozens of used, working Fluke/HP/Keithley benchtop DMMs on ebay and similar auctions selling for 1/3rd that price..... and those brands hold spec. longer also. To me, that name "TENMA" just rings like a jingle bell on a cat's collar. Go with one of the three brands I mentioned and your's will perform like a 1-ton bell in the Nortre Dame bell tower!