I own one, I think they are about $50. I would pay $500 for one if I had to now, since I know how beneficial it is now. It becomes one of those tools that after owning it, you can't believe you did without one for as long as you did. It will hold the board in place by itself basically becoming a third hand or a un-paid helper. I like un-paid helpers!
You will make the $50 bucks back on the 1st deck you use it on with time saved and more importantly how easy it makes a usually pain in the ass problem just a 5 second fix.
- It works for 45's also.
A trick to remember is that if the closest joist you have that will effectively work with the tool is too far away to get the leverage you need in the spot you need it(This will make more sense when you start using it) just temporarily lay another shorter deck board against the board you are trying to bend and use the bow wrench against that board which will move the actual board you are fastening into place. (it will make sense when you try it)