I've just been having a look on the internet at the cost of the bollards. The cheapest that i've found are £3000 each, the most expensive are £20,000 each. The company that makes the expensive ones, range from £6000 - £20,000. The price is for supply and fitting. Each set of bollards would require a receiver unit costing £110, & every vehicle authorised to use the bollards requires a transmitter costing £25 each.
As for the repair. The company claims that the bollards are maintainance free for at least 4.5 million cycles. They can also withstand being hit by a 7 ton truck traveling at 30 MPH, so the vandals would have a really hard time trying to destroy them.
There probably cheaper options somewhere, i'll keep looking.
