Diy tools are: Sold mainly through diy outlets Have both brands widely recognised by diy'ers and diy outlets own brands Tend to be loaded with features/gimmicks Put greater emphasis on price than build quality Prioritise price over durability Cordless tools tend to have slow chargers, single batteries and less good cell life
Professional tools are:
*differentiated by manufacturers from their diy ranges* Sold mainly through trade outlets Concentrate on brands widely recognised by professionals Have limited features/gimmicks Put greater emphasis on build quality than price Prioritise durability over price Cordless tools tend to have fast chargers, multiple batteries with very good cell lifeBased on those factors, I'd say the 100 quid Sparky impact driver just about makes it to the pro side.
Ryobi OTOH is one of the few companies (possibly the only?) that chooses to blur the diy/pro distinction
I'd also say - generally - that 100 quid is about the absolute max price that the diy will stand.
There are sub 100 quid pro tools - but I tend to notice that when these are sold through diy outlets the retailers choose a price point with a significant gap from their other products - unlike their usual custom of a continuous spectrum in 5 and 10 pound increments.