|How did this all get here?!
So, if there is a series you really want and it is going to come out soon or is currently coming out, pick it up as soon as possible. Yes, a lot of series devalue over time but there are many cases of a great series going out of print (OOP) shortly after release and having super jacked up prices. So, often to avoid headaches I suggest getting titles as they come out. This might seem expensive but there are way to save money.
One thing not to do is buy from a big box retailer. Not that I hate Barnes & Noble, but there other ways and places to acquire manga cheaper. One of those is to try your local comic book shop. Local shops often will give a deal if become a "subscriber." You order so many titles a month (with the plan to get future volumes) and the store gives a discount on all these titles. Generally in the range of 10% to 20%. Since manga isn't monthly for the most part, you will have to talk to the store owner about making arrangements. Most of the time store owners are more then willing to make a deal with you. Also even if you don't see your favorite manga at the local store there is a good chance they can order it in for you.
Another great way to get new manga cheap is Amazon. It is almost always discounted to some degree. I just looked up Sailor Moon Volume 1 and it is 35% off. Now another great thing about Amazon is pretty much everything over $25 dollars will have free shipping. I just wait for about three titles I want to come out and order all three at once for the free shipping. If you have Amazon Prime then you don't even need to worry about that. If you are a student you can get a free six month trial of Amazon Prime no less.
Another online retailer that is worth trying rightstuf.com. They often have sales from different publisher that give for around 33% off. They also have a Got Anime? Purchasing Club Membership which gives an additional 10% off. Though unless you are ordering over $49 dollars you will have to pay shipping costs.
One last suggestion for buying new is buying new titles at cons. This can be a crapshoot though. Some publishers like Vertical sell all their books at a great discount ($10 a piece for books that run $16.95 sometimes) but you have to hurry to the dealers room right away to get what you want. Other dealers may offer discounts on newer books also. There are also deep discount sellers with deals like 10 for $40, on new but slightly older titles. Where the more you buy the cheaper it is. If you are in the dealers room you can put your books together for an even better deal. If there is something you are really jiving for, it might be worth a look.
Next time I'll talking about getting those series you might of missed out new in "Buying Used."