virtual instruments

Plughugger is now offering a selection of soundsets for only 0.99 euro (about $1.28 USD) through March 31st. These soundsets may be exactly what your current project needs, or they may just be a fun novelty for your sound library. At this price, either is perfectly acceptable.
You can read more about these soundsets and listen to demos here: http://rekkerd.org/plughugger-launches-soundset-sale/

The Vocal Sampler sound library by Diginoize is now available for only €16.00 EUR (about $20.82 USD). This library includes 230 high quality samples that are completely royalty free. The samples from this pack were drawn from other Diginoize vocal packs, so you a sure to get plenty of variety for your money here. Listen to the demo to see if this is something you could use.
You can read more about this sampler pack here: http://www.diginoiz.com/?q=urban-loops-line/diginoiz-vocal-sampler

The FX Samplepack by 123creative is a library of over 200 samples and effects that will be perfect for producing electronic music ranging all the way from minimal trance to electro-house, and everything in between. Having a large library available to use for production may help spark some extra creativity. Check out this pack to see if it suits your needs.
You can read more here: http://rekkerd.org/123creative-releases-fx-samplepack-for-dance-music-production/

Most instruments are distinctive in one way or another. Sure there are differences between a baritone and a trombone, but the foundation of their sound is still somewhat related. It’s difficult to find a similar analog for steel drums. They may not get used in every track, or even every album, but steel drums can really add quite a bit to some genres of music.
You can read about this sample library here: http://rekkerd.org/sound-dust-releases-steel-drum-percussion-room-mk2/