The price of a dual Sim phones ranges from Php 2,000.00 to Php 6,000.00 depending on the product model and of course it's features.
A WiFi phone with touchscreen features from Myphone will start at almost Php 3,000.00
That's pretty cheap for a phone with WiFi capability check out the prices of touchscreen phones in the Phillipines.
Here's the Pricelist of Touchscreen cellphone's from Myphone
T18 Duo - PhP1,999.00
T23 Wifi Duo Full Touchscreen Phone - PhP2,888.00
TW1 Duo WiFi Touch w/ Trackpad - PhP3,488.00
TW8 Duo WiFi Full Touch Phone - PhP4,999.00
TW9 Duo WiFi Full Touch Phone - PhP5,999.00
A818 Slim Duo Android v2.3 (Gingerbread) - PhP 3,990.00