$759 will not represent an investment that will change your life, but it is a step forward towards achieving more income, which may generate 3 times your investment in the future.
Is the bike you are looking for a motorcycle or a regular bike, because the price of bikes on average here ranges from $200 to $800, and 750 will definitely buy you a bike, or you can wait until the Bitcoin price is 60,000 and you get your capital back and a bike.
I believe the bike he shared the picture of in the OP is what we refer here as Power bike, From what I know, power bikes can be referred to as high performance bike, and they are usually very much more expensive than $200 to $800 you mentioned. Though how expensive it is usually depends on the make, and the quality of the bike, as well as the performance.
Like myself, I bought one regular bike last year for around $600, though not the kind is sophisticated bike like the OP wants, I would personally refer to mine as a motorcycle.
only take money away from him going forward.
For the fact that I am advocate of adult mobility I encourage ops to save up to buy his dream bike since the buying of that bike will aid his mobility properly, it made a whole lot of sense to also be sure of the region where ops is to determine the value of the bike, like those in China, where there are several product alternatives which help reduce the total amount of cost of such dream bike, but then ops should also make provisions and savings for it maintenance.
In most places around the world that amount of investment in Bitcoin won't give you a brand new of that class of a power bike will come to around $2000 even in China unless either the ops want to add extra money to his investment al ng the line, or going for a second owner bike which won't be a good idea.