okay what a good Straightener would you recommend me to buy for thin hair and where can i buy it..?

Conair Babyliss Pro Ceramic Tools CT2555 1" Professional Ceramic Flat Iron --Latest Technology - Outstanding Advantages - Ceramic evenly spreads heat for faster styling - Ceramic emits negative ions which revitalize your hair - Ceramic assists in the breakdown of bacteria buildup 200 Watts with Ceramic Pulse heat technology 25 Heat settings On/Off with indicator light Slim 25mm plate size for versatile styling Soft-Grip Handle For Greater Comfort

Conair Babyliss Pro Ceramic Tools CT2555 1" Professional Ceramic Flat Iron with 25-heat settings and Ceramic Pulse heat technology for instant and even heat that reaches 446 degrees F. Slim ceramic plate design for versatile styling and soft grip handle for comfort. Ideal for short hair styles.

There is also the Andis Ceramic plate straightener selling for $15.98!
specifics:
Andis' 1 inch flat iron is perfect for all hair and styles. Ceramic plates, with its smooth finish and even heat technology, preserve natural oils and seal the hair cuticle for improved moisture retention. The result is increased luster and shine to the hair. The clamp style of this iron holds hair tight for quick results. You can straighten, flip, control, and smooth hair with a single product. The high temperature of 375 degrees allows you to really lock in the style and create professional results at home. This flat iron's auto-off feature, dual plates, a tangle-free cord and fast heat up are features that all women need in their styling appliances. For over 80 years, Andis has provided the barber and beauty industry with the finest quality of hair styling equipment to assure the highest level of professional results and now we are making this technology available for home use with the Andis at Home line of products. Designed and engineered in the United States, Andis also offers a complete line of quality clippers and trimmers for animal grooming as well as a full line of wall mounted hair dryers for the hotel industry.

As for the Curling iron, try the Conair Ceramic Tools 1.5" which sells for $19.88!
specifics:
Conair Ceramic Tools 1.5-inch Dual Voltage Professional Ceramic Spring Curling Iron Model CT155S -- Professional 1-1/2" ceramic barrel spring curling iron. 25 heat setting temperature control, on/off switch, power indicator light, cool tip and rubberized comfort handle. Quick 60 second heat up to 392?F and 9 ft. tangle free power cord. Dual voltage for worldwide use. A ceramic iron has many benefits. The ceramic plate technology provides increased heat distribution, eliminating the damaging hot spots found with other irons. When introduced to heat, ceramic is known to emit ion reflectives. Assisting in the breakdown of bacteria build-up, the reflectives enhance and renew the vitality of your hair. This ceramic iron will give your hair a smooth, silky shine while eliminating frizz. 1 and a half inch ceramic plates / Inferred Heat to protect hair luster / instant heat temperature dial to 400 degrees F Professional Ceramic hair styling curling iron. The adjustable temperature control allows you to dial up or down, in order to get the best results for your hair type. This ceramic iron is perfect for a shiny and sleek look. Features 1 1/2" Ceramic iron 25 Heat Settings Instant Heat temperature dial - up to 400o F (204o C) On/Off button with green and red light indicator Ceramic creates a shine, smooth finish Ceramic emits negative ions which smooth and relax hair Ceramic generates far infrared heat to protect hair's luster For all hair types AC 110V 60Hz for use in USA/Canada