Plastic Fence Posts | eBay.Plastic (UPVC) Temporary / Perm Fence Post for Garden Post And Chain Fencing. Available in Black or White & 2 different lengths. ￡10.92. Buy it now. + ￡6.48 P&P. 54+ watching; |; 720+ sold. Before ordering you should sketch out your project and establish how many of each you may require.