For the low end, I recommend all Lee products. Love 'em or hate 'em, they're cheap and they work. They're even cheaper used, so I recommend trying to find these at gun shows or used on Ebay.
If you typically have a table and some C clamps, I recommend getting a C press, bolting it to a scrap of wood, and clamping it to a table you may have handy:
http://leeprecision.com/reloader-press.html
I paid $15, used, for mine.
If that's not an option, go with the hand press:
http://leeprecision.com/breech-lock-hand-press.html
I paid $20, new, for the non-breech block version.
I have both, and the extra leverage you get from a mounted press is worth it, but not mandatory.
Then, you'll need a set of dies. Again, Lee is typically the answer, but you can often get other quality sets off eBay for as much or less. NOTE: You NEED to get a CARBIDE sizing die. Many of the sets on eBay are older and are steel, not carbide. DO NOT make the mistake of getting one. The difference is that you need to lube the cases, and then remove the lube, if using steel resizing dies. Carbide dies do not require lube, and are MUCH faster. Here's what I'm talking about:
http://leeprecision.com/3-die-set-9mm-luger-carb.html
You should be able to find a set for $20-25, that includes a shell holder.
Lee die sets come with a powder scoop. Use the instructions to figure out how much this scoop will hold of the powder you're using, and cross reference that amount to confirm it's withing safe published load data.
You'll need to prime your cases. One that works good is the Lee Ram Prime:
http://leeprecision.com/ram-prime.html
These are hard to find for less than the $15 list price, but you should be able to find it with free shipping.
Get a pound of Red Dot or 700x powder, and you can load 9mm with it, as well as light loads in your .30-30. Unique powder also works well for both cartridges. This should be $28 or so. A pound is 7000 grains (the unit of measure), and the Hodgdon load data for 700x powder is 3.9 to 4.2 grains (again, the unit of measure) per load. Assuming a load of 4.0 grains, you'll get 1750 rounds per pound, or $0.016 per round, or $0.80 per box.
Load data for .30-30 is not published by the factory, but is available from reputable sources (C.E. Harris).
Primers are a bit tougher. Deals can be had online, but locally, not so much. You'll probably be able to find primers for $30/k, or a bit more. At $0.03 each, you're at $1.50 for a box of 50.
I recommend plated bullets to start. You can order from xtreme bullets, and they have free shipping for first time customers. 115 grain 9mm bullets are $39.29 for 500, or $3.93 for a box of 50.
You will use brass picked up at the range. I recommend cleaning with 2 liter bottle of store brand diet soda. Pour some out to drink, drop you cases in, and shake it around. The carbonic acid cleans the brass, and washes the range gunk off. Rinse off the soda pop, and you're ready to load.
So a box of ammo is $6.23 per box. You can size/deprime, flare, and prime while watching TV, talking, or otherwise distracted. You'll need your full attention to place the powder in the case and seat bullets.
With this setup, you should be able to load 100-150 bullets per hour. Assuming an equipment start-up cost of $50, and a loaded ammo price at Wal-Mart of $10.60 ($9.99 plus tax), you're saving $4.37 for each box loaded. You'll break even on your equipment in 11.44 boxes.
If you find reloading is not for you, you can sell all the equipment for what you paid for it.
The economics of reloading 9mm is tough, and though I have the equipment (and several Dillon progressive presses to load on), I haven't yet done it. I do load every other caliber I shoot, except .22lr. The price to load .38 special is identical to 9mm, except a box of store bought ammo is $15, so the savings quickly add up, and are compelling. .44 magnum, at $30+ per box, and you're making money!
I intend to start reloading 9mm soon because I shoot in a local shooting league, and I want to load ammo that's more accurate than cheap store bought ammo.
It's up to you to decide if it's worth it. As an itinerant biologist, I know you aren't eating steak and lobster every night, and a simple setup may work for you.
The reloading sub-forum will have a lot of answers to any questions you may have.