PXL is already tradable, however there is no volume as it has not been added to the listing for exchanges just yet.
Users can send PXL between eachother through any Etheruem wallet, as it is an ERC20 Ethereum token. Because it is an ERC20 token, PXL follows a set of protocols, which lets other DApps that know of ERC20 to use PXL very easily. PXL can very easily be added to many exchanges which support the protocol.
We will make an announcement in the future when the first exchange officially supports PXL on their listings. Until then, more advanced users can use decentralized exchanges such as EtherDelta and ForkDelta, which allow users to import any ERC20 token by referring to it as its address.
For yourself or any users who are interested in going that route, the PXLProperty Smart Contract address is:
0xf07d979303c50a8632848cb154c6b30980218c07