These are great if you're not looking to upgrade your TV but still want On Demand on your TV.
You can get one at Freeview Accredited Retailers nationwide, shop around for a good deal!
Here're the brands & models to look for:
AerialBox T2100 is a single tuner FreeviewPlus box that works with UHF aerial and retails from around $150.
AerialBox T2200 is a MyFreeviewPlus recorder that works with UHF aerial and retails from around $400.
SatBox S8200 is a MyFreeviewPlus recorder that works with Satellite Dish and retails from around $400.
Once set up, you can enjoy all the FreeviewPlus or MyFreeviewPlus features, subscription-free.