W.T., unfortunately, in swords, it is very much a case of getting what you pay for. It is my guess that, if you want a good quality sword, you will need to pay upwards of $300 for one, at least in a Western style sword. Here are some suggestions:
www.albionarmorers.com sell a number of Roman
gladii, the famed shortsword of their Legions. They run from $450-$550 for the basic sword, but they are the best buy for the money. There may be others around for less, such as the later versions of the Mainz-style gladius from Depeeka, which is fine for re-enacting, but is not a real fighting quality weapon nor one that you would really want to display as a collector's piece. The Albion pieces are both. The also have a Del Tin Cinquedea(5 fingers wide) blade for $194, but it is in the margin between shortsword and large dagger with an overall length of 24" and a blade of 18". The Renaissance Italians carried them in the small of the back as weapons for close quarteers fights. They are reputed to have been damnably effective. It is a very interesting blade with a real history and looks very nice, so it may be the exception that proves my rule if it serves your purpose. Triton can make you a very nice sheath for it, as it comes without one.
www.lutel.cz makes an interesting line of
Katzbalgers, the shortsword of the German
landesknechts, or mercenaries, of the 15th Century. Their basic weapons were pikes, halbreds or other such weapons, and the huge two-handed broadswords that chopped down the other side's front line. The
katzbalger was the secondary weapon for the melee that followed the collapse of the pike formations. Lutel has one for 9,900CZK, which converts to about $366. It has a blade of 26" and comes with a scabbard and belt. They will ship it sharp or dull, depending upon your wishes, and they appear to have about an 8 week waiting period between receipt of your money and shipping. I have one of their products and it is very nicely done for the money, with a very sturdy forged blade.
Arms & Armor,
http://www.armor.com/, also have a beautiful katzbalger for $640 + $85 for a scabbard. Theirs is a bit bigger at 25 3/8" overall and a 20" blade.
Finally,
www.allsaintsblades.com offers Angus Trim's quite excellent swords, one of which, the AT 1425, Short Riding Sword, is just perfect for your purposes, I should think. It sells for $325 and it is 26.5" overall with a 20,75" blade. Atrim's blades are noted for their quickness and handiness, a reputation for which I can vouch as far as the one Atrim blade that I have is concerned. Again, this sword comes without a scabbard and, should you want one, I suggest that you contact fellow Forumite, Russ Ellis, AKA Triton, who makes very nice custom scabbards and fittings.
OK, there are my thoughts on the matter. Good Luck.