It lives in your pocket all day and sits there on your dressing table at night next to your loose change and your cufflinks. You use it every day, but how much thought actually went in to the process of buying your comb? Probably not enough.
You can probably pick a cheap comb up for a few pounds and the most expensive will probably cost you a crisp tenner. Looking at it that way there is quite a difference in cost between the two ends of the scale in terms of percentage, but when you take a step back even the most expensive still only costs a tenner. It is hardly an expenditure that you will need to write to the bank manager about. But why would you spend £10 when you could get away with spending £2?
The answer lies partially in the material of the comb. The cheapest combs will be moulded from synthetic petrochemical based polymers which can cause a lot of static. The better combs will be made from either horn which causes little static or cellulose acetate which is a non-petrolium based plastic which again causes little static.
The key, however, is mainly in the method of manufacture. The cheap end of the market will be plastic injection moulded combs. The tips of the teeth are generally too sharp and can damage the cuticle of the hair. Also, being injection moulded, the comb will have imperfections in the finish (split lines, weld-lines, flash etc). These are all essentially rough edges on the comb which snag and pull the hair causing damage and split ends.
In contrast the more expensive combs will be saw cut and then polished and buffed to ensure that the teeth are smooth and free from sharp endues and imperfections. This is often done by hand.
I favour a hand made horn comb by Geo F Trumper. Each one is individually made and being made from horn each one is unique.