do i need a juicer or is a blender enough?can you suggest a cheap (<60$) juicer?

Well, personally if I were you, I would purchase a blender rather then a juicer.  You can use a blender to make shakes, smoothies and more.  Juicers only can make a limited amount of drinks.  I would and for the price that you are paying it really is more economical to go with a blender too. 

Oster is the best warrantied of my recommendations and has the best over all reviews also.  Hamilton Beach is also a solid performer also.

One of the best cheap juicers is a Waring Pro JEX328. It has an efficient metal design and easy assembly with few parts to http://www.clean.It can be purchased at http://www.Amazon.com for $52.24.

For Smoothies and drinks, I always just used my blender and it worked fine!  But if you do want a juicer, you have a few options that are under $60.00!
One is the Back to Basics 12 qt Steam Juicer selling for $59.98
specifics:
Simple by design, the Back to Basics Aluminum Steam Juicer makes it easy to extract the natural juices of grapes, berries and other soft fruits with the power of steam. This six-piece set is ideal for making juice, jellies, syrups, and ciders.

• 12-quart capacity for juicing bushels of fruits and berries
• Includes: Lid, Steamer, Juice Kettle, Water Pan, Drain Tube & Clamp
• High polish aluminum construction
• Warranty: 1 year parts, no labor
• Model# A12

There is also the Hamilton Beach Big Mouth Juicer selling for $59.88
specifics:
Whether blending blueberries or pulping pineapples, the Big Mouth Juice Extractor will process whole fruits and veggies in mere seconds. The wide chute knocks minutes off your prep time, and the extra-large bin allows you to juice for as long as you please. You can add the nutrient-rich pulp to any recipe, or simply mix it in a smoothie for a healthy treat.

• Fits whole fruits and vegetables for fast, easy juicing
• Eliminates pre-cutting to save time
• Powerful 800-watt motor
• One-piece stainless steel mesh strainer
• Dishwasher-safe parts for easy cleaning
• Easy to assemble and store
• Model No. 67600

There is also the GE Extractor which sells for $49.00
specifics:
  800-watt juice extractor Large mouth feeder Safety lock 2-speeds