just go to samedaymusic.com and check out these if your on a low budget...pricing are US..

MIXERS -

Behringer UB502 Eurorack 5 Input Mixer - 50$

Behringer UB502 Eurorack 8 Input Mixer - 60$

theres more..

PRE-AMPLIFIERS -

too many good ones to list so check em out urself...

http://www.samedaymusic.com/prodsea...=Filter+Results

KEYBOARD -

Casio CTK491 61-Key MIDI Keyboard - 70$ - 100$

Roland FPS1 88-Key Keyboard Stand with Built-In Speakers - 80$

MIC AND MIC ACCESORIES

Windscreens - 4$

Wireless Microphone Stand Clip - 5$

OnStage DS100 Fixed-Height Desktop Microphone Stand - 12$

OnStage DS7200 Adjustable Desktop Microphone Stand - 15$

Ultra 6521 Microphone Stand (Floor, Black) - 18$

OnStage ASVS6GB Microphone Pop Filter - 25$

Nady SCM900 Studio Condenser Mic - 60$ - 80$

CAD C195 Handheld Vocal Condenser Microphone - 70$

Samson C01 Large Diaphragm Studio Condenser Microphone - 70$

Global Audio by CAD GXL2200 Condenser Microphone - 70$

Shure SM58 Dynamic Handheld Microphone - 100$ - 105$

Behringer B1 Single Diaphragm Studio Condenser Microphone - 100$

Behringer B2 Dual Diaphragm Studio Condenser Microphone - 150$

well theres so many others go ckeck for yourselves..i listed the ones under hundered....

ite..im out ez...

this is wut i would get for A BUDET OF 500$

Behringer UB1202 Eurorack 12 Input Mixer - 90$
Casio CTK491 61-Key MIDI Keyboard - 70$ - 100$
Ultra 6521 Microphone Stand (Floor, Black) - 18$
OnStage ASVS6GB Microphone Pop Filter - 25$
Behringer B2 Dual Diaphragm Studio Condenser Microphone - 150$
Behringer VX2000 Ultra-Voice Pro Mic Preamp/Voice Processor - 130$

=

483$ - 513$

juss a little over the 500$ budget but it might not be because the keyboard can be 70$ to a 100$..im out...thats all the help i can give you...