str(lacuracao_tvs$precio_actual[1])
chr " 1199.00"

new_precio_actual <- trimws(lacuracao_tvs$precio_actual[1])

dput(new_precio_actual)

> str(lacuracao_tvs)
'data.frame':   100 obs. of  4 variables:
 $ ecommerce    : chr  "la-curacao" "la-curacao" "la-curacao" "la-curacao" ...
 $ producto     : chr  "TV LED AOC Ultra HD Smart 50" LE50U7970" "TV Samsung Ultra HD 4K Smart 58" UN-58RU7100G" "TV LG Ultra HD 4K Smart AI 55" 55UK6200" "TV AOC Ultra HD 4K Smart 55" 55U6285" ...
 $ precio_antes : chr  "1899.00" "1899.00" "1899.00" "1899.00" ...
 $ precio_actual: chr  " 1199.00" " 1199.00" " 1199.00" " 1199.00" ...

Sys.info()
          sysname           release           version          nodename
        "Windows"          "10 x64"     "build 17763" "DESKTOP-MNDUKBD"
          machine             login              user    effective_user
         "x86-64"       "OGONZALES"       "OGONZALES"       "OGONZALES"
> sessionInfo(package = NULL)
R version 3.5.2 (2018-12-20)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 10 x64 (build 17763)

Matrix products: default

locale:
[1] LC_COLLATE=English_United States.1252
[2] LC_CTYPE=English_United States.1252
[3] LC_MONETARY=English_United States.1252
[4] LC_NUMERIC=C
[5] LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

other attached packages:
[1] dplyr_0.7.8     rvest_0.3.2     xml2_1.2.0      RSelenium_1.7.5

loaded via a namespace (and not attached):
 [1] Rcpp_1.0.0       rstudioapi_0.9.0 bindr_0.1.1      magrittr_1.5
 [5] rappdirs_0.3.1   tidyselect_0.2.5 R6_2.3.0         rlang_0.3.1
 [9] stringr_1.3.1    httr_1.4.0       caTools_1.17.1.1 tools_3.5.2
[13] binman_0.1.1     selectr_0.4-1    semver_0.2.0     subprocess_0.8.3
[17] yaml_2.2.0       openssl_1.1      assertthat_0.2.0 tibble_2.0.1
[21] crayon_1.3.4     bindrcpp_0.2.2   purrr_0.2.5      bitops_1.0-6
[25] curl_3.3         glue_1.3.0       wdman_0.2.4      stringi_1.2.4
[29] compiler_3.5.2   pillar_1.3.1     XML_3.98-1.20    jsonlite_1.6
[33] pkgconfig_2.0.2