Folks are probably not replying because the majority are in North America.
Are you looking for a mountain board or kite board? Either way your choices will be limited at 150.
MBS, and Scrub have cheap entry level ATB boards but the are designed for juniors and will not stand up to your weight.
You might want to check your local second hand sights. Shipping can kill a good deal on a board due to the weight.
Radsail RKB R2 is a cheap board that will hold you weight but isn't as well built as MBS or Scrub. It will get you going but you will want to upgrade.
Kites: 2.5m Profoil , Quadrifoil XL kitesurfer, NPW 5 Danger.
Flexifoil: 1.7m Sting, 4.9m Blade 3, 9m Blade 2.
Flysurfer : 19m Speed 2 SA, 7m Pulse
Peter Lynn :18m Phantom, 15m Synergy, 10m Synergy, 1200 Farc, 460 Sarc, 130 Tarc, 5m Peel, 4.2m , 6.4, 8.5 C-Quads, 3.5 LS2 single skin.
Rides: Flexi / P.L. Frankin'Buggy , Shaped + straight skiis, sand skis, Coyote blades. Core 95 ATB. RKB R2 ATB .
Ken (K2)