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The Speed Freeks list says that "all items of wargear cost the Mek an additional +5 pts per item chosen". However, in the previous section, it has listed that additional "equipment" may be taken from the armoury. Does this mean that taking additional weapons for the Deth Kopta mek doesn't incur the additional +5 points surcharge?
If in the armoury it is listed under any heading other than "wargear" theno but if listed under the headinf Wargear then yes.
This is really a tough one as it does only say wargear, but common logic would say that the weapons chosen what add to the weight so they would also have to pay more.
As it only says wargear then I would have to say that the weapons don't cost more.
Prey they don't take you alive
The extra points for wargear rule for meks is only used if in a deth kopta, nowhere else is it used. (to the best of my knowlage)