When someone starts thinking of custom wood blinds the word that pop into their mind is expensive. Indeed wood custom blinds do tend to become rather pricey. This usually comes as a result that additional work is usually required for the deviation from the standard. For normal wood blinds you only require a production line, for wood custom blinds you need someone who knows what he's doing.
Of course a decent workaround on the subject of custom wood blinds would be to find someone who's selling the exact size you want as a standard. Typically this would be an immense task, but they invented the internet in the meantime, so you have a much higher chance of finding such an item. Most of the time, but not always. For these less fortunate cases you will have to go the whole nine yards and pay extra.
If the budget is not very generous there is also the option of custom made faux wood blinds. These usually cost less, but their quality also leaves a lot to be desired. With large blinds in particular they can be a headache, as they are heavier than wood and require some extra support. Nonetheless, this is a field that has seen a great deal of improvements in recent years, mostly because manufacturers invested a lot in research. The newest items of this sort are almost impossible to distinguish from custom wood blinds. This sort of texture will fool just about anyone in ninety percent of the cases.
If you are still willing to pursue the buying of custom wood blinds, it is better to start by finding out what you actually need. Many merchants offer free evaluation as an extra perk. If they offer it, use it. You would be amazed to find out how many windows have the wrong wood custom blinds attached to them. Must be one of Murphy's law here in action. Bottom line is that if you allow a specialist to take the measurements you will at least be able to ask for a refund if the custom wood blinds don't fit.
As for the price, I strongly recommend that you purchase online. You wouldn't believe how many companies have fallen to the mirage of the "information highway" without at least a clue on how to actually sell stuff online. This puts them in a rather awkward position and usually forces them to lower the prices, much lower than with traditional shopping.
Bottom line is that if you need custom wood blinds it is better to first hire a consultant and then purchase online to obtain a discount. Using a price comparison service can help you to quickly find the best offer. More important than the size though, is the color and texture. Don't fall for bargains that sell you something that you do not really want. If you are spending money you should at least be smart and not settle for lower quality.
On a tight budget you may use the option of custom made faux wood blinds