Average amount spent on your primary AEG..

[shakespeare]

KWA M4A1 RIS - 365$
came with battery.
Sling? Bootlace tied in a comfy manner!
Traded full size carry handle for smaller rear sight.


Vertical foregrip : 10$

Total cost? 375$

It may start costing me a tad more, the FPS is down to 350 from where it was at, 400.

[GacktC]

Mine is still the lowest, can't go any lower

[malik]

When did this post get started up again...? Anyway, $150 on stock G&G M4... used-

[Ivan Daylovich™]

Stock G&G SG550: $395
And to answer the original question: Hell yes it's effective.

[Vidar]

Stock G&G SG550: ~$300

Magpul'd and otherwise very upgraded M4: ~$200

Tanaka Kar 98k: $200

[Regular Guy]

Echo 1 ER16 - $210
came with rail cover, battery and charger

Upgrade battery and charger:
9.6v 2000mah - $35
Tenergy smart charger - $23

Accessories:
Vertical grip - $10
UTG Red dot sight - $33
Sling - $8

[Tanto]

Echo 1 M-4: $385
DD Omega rails: $110
Foregrip: $20
FACOG: $90

Total: $605, ouch...

[Dalb]

G&G's are skirmishable for "Out of the box" but a TBB definitely helps and is the easiest upgrade ever.
To answer the question, My Echo 1 CPW cost 220 retail, with some different accessories it totals out to around $310.

[Slowgun]

CA Full metal M4 $180 (used)
RIS $60
Foregrip $20
Light/Laser $85
Mags $40
PEQ Battery Box $25
M110 Spring to 400FPS $56
Mock Silencer $30

Total amount spent = $496